/*****************************************************************************
 * xenbus.h
 *
 * Xenbus protocol details.
 *
 * SPDX-License-Identifier: MIT
 *
 * Copyright (C) 2005 XenSource Ltd.
 */

#ifndef _XEN_PUBLIC_IO_XENBUS_H
#define _XEN_PUBLIC_IO_XENBUS_H

/*
 * The state of either end of the Xenbus, i.e. the current communication
 * status of initialisation across the bus.  States here imply nothing about
 * the state of the connection between the driver and the kernel's device
 * layers.
 */
enum xenbus_state {
  XenbusStateUnknown = 0,

  XenbusStateInitialising = 1,

  /*
   * InitWait: Finished early initialisation but waiting for information
   * from the peer or hotplug scripts.
   */
  XenbusStateInitWait = 2,

  /*
   * Initialised: Waiting for a connection from the peer.
   */
  XenbusStateInitialised = 3,

  XenbusStateConnected = 4,

  /*
   * Closing: The device is being closed due to an error or an unplug event.
   */
  XenbusStateClosing = 5,

  XenbusStateClosed = 6,

  /*
   * Reconfiguring: The device is being reconfigured.
   */
  XenbusStateReconfiguring = 7,

  XenbusStateReconfigured = 8
};

typedef enum xenbus_state XenbusState;

#endif /* _XEN_PUBLIC_IO_XENBUS_H */

/*
 * Local variables:
 * mode: C
 * c-file-style: "BSD"
 * c-basic-offset: 4
 * tab-width: 4
 * indent-tabs-mode: nil
 * End:
 */
